Built environment and physical activity among adolescents: the moderating effects of neighborhood safety and social support

Table 2 Associations between built environment (1 km and 2 km network buffers) and moderate-to-vigorous physical activity (MVPA) outside school hours (minutes/day) among adolescents (B coefficient and 95% confidence intervals)

N = 358		MVPA outside school hours (mins/day)
	Adjusted B (95%CI)^a	Moderator^b	Adjusted B (95%CI)^a	Moderator^b
Built environment	1 km buffer		2 km buffer
Recreation facilities	0.74 (−0.13, 1.63)	Sibling/peer support	0.55 (0.23, 0.87)***	–
Park area	0.27 (−1.51, 2.05)	–	1.11 (−0.01, 2.33)	–
Walkability	0.77 (0.02, 1.51)*	–	0.79 (0.06, 1.51)*	–
Street intersection	0.01 (−0.02, 0.05)	–	0.01 (−0.01, 0.01)	–
Residential density	0.20 (0.01, 0.39)*	–	0.37 (0.12, 0.62)**	Sibling/peer support
Land use mix	5.61 (−1.67, 12.9)	–	4.12 (−5.21, 13.47)	–

Notes: CI Confidence interval; ^a Adjusted for age, sex, neighborhood disadvantage and accelerometer wear time; ^b Each interaction term added to model – significant (p < 0.05) interaction terms noted. * p < 0.05; ** p < 0.01; *** p < 0.001

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